I think this is come kind of heaviside step function but how do i find out the equation to it?

You need to post your questions more clearly.

Are you trying to find f(t) given that its laplace transform is F(P) = [1-exp(-p)]/[p(1+exp(-2p)]?

Oct 9th 2010, 05:22 PM

CookieC

yes I am and the graph I was given gives the answer of f(t) but I just don't know how to find the equation of that graph

Oct 9th 2010, 09:22 PM

mr fantastic

Quote:

Originally Posted by CookieC

yes I am and the graph I was given gives the answer of f(t) but I just don't know how to find the equation of that graph

Here are two things (the first you should already have been taught):

Theorem: If f(t) is a periodic function of period T then .

In light of the above theorem, you need to find and then define f(t) as an appropriate periodic function.

Now you need to think hard about these two things and then make a strong attempt at the question before asking for more help.

Oct 10th 2010, 04:07 AM

CookieC

Is it still included as a periodic function if the lines are straight lines? as in from 0 to 1 it is a straight line with y = x then a flat line from 1 to 2 then from 3 to 4 is is a line from one to 0 thats downward sloping..not sure if that made sense

Oct 10th 2010, 04:15 PM

mr fantastic

Quote:

Originally Posted by mr fantastic

Here are two things (the first you should already have been taught):

Theorem: If f(t) is a periodic function of period T then .

In light of the above theorem, you need to find and then define f(t) as an appropriate periodic function.

Now you need to think hard about these two things and then make a strong attempt at the question before asking for more help.

My mistake. The above is not directly relevant to the question. I misread the denominator of the expression in post #1 as having a minus instead of a plus. If you re-arrange the form of the expression by multiplying numerator and denominator by then the ideas I have suggested will work I think.